Herbal Teas, also called tisanes, are a major part of the tea world, but did you know they're not technically teas? What is commonly referred to as an "herbal tea" is actually an infusion or decoction made from a plant other than Camellia sinensis—the plant from which true teas (green tea, black tea, oolong, etc.) are made. For this reason, there is a trend toward the use of terms like "tisane" (pronounced tea-zahn), "botanical," or "infusion."